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openfedem / fedem-gui

Graphical user interface for FEDEM
https://openfedem.org
Apache License 2.0
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Modelling prismatic joints fails if more than 1 joint is modeled #24

Closed kristsaet closed 1 month ago

kristsaet commented 1 month ago

The second prismatic joint modeled get the same master-segment curve as the first prismatic. And joint is corrupt. Has to be manually handled by editing the FMM file, and adding the second master-line manually.

kmokstad commented 1 month ago

This I was not able to reproduce on a random model (see image below). I tried to create two prismatic joints on a simple shell part and they both looks OK to me. Or do you mean placing two prismatics on the same location (only with the slave triad a different place)? In that case it is intended the two prismatics will share the same glider when they both are attached to the FE part.

{F7557385-9BB2-4563-B8C2-C3D953C2AD17}

@kristsaet You need to describe this issue more accurately before it can be addressed further.

kristsaet commented 1 month ago

I failed to inform that I am using system-level beam elements, and also the "Prismatic Joint between triads" method of creating the joint.

Attaching demo-models in zip-file before and after adding the joints.

If you open the model named _1_Prism.fmm and select triad 13 and 3 as masters for the new joint, and triad 8 for slave, this bug should trigger I believe.

In the model named _2_Prism.fmm the second joint is already wrongly modelled.

prismbug.zip